Приведу посты часового мастера Al (Archer), который активен на omegaforums и watchuseek.
Там и про сложность обслуживания коаксиала (нанесения правильного количества масла), про износ колес, про Роджера Смита, который смазывает коаксиал и говорит, что без смазки плоховато работает, и т.д. Все подробно и с фото.
https://www.watchuseek.com/threads/w.../post-53719705
https://www.watchuseek.com/threads/w.../post-53722726
https://www.watchuseek.com/threads/w.../post-53722958
https://www.watchuseek.com/threads/w.../post-53723503
В этой теме на стр. 4 отличный пост про износ деталей (да и вся тема интересна):
https://omegaforums.net/threads/best...nt-now.160780/
Цитата оттуда:
« Since my business has shifted a lot towards servicing vintage watches, I don't service as many co-axials as I used to. However when I see people post photos of the parts they get back from Omega when a service is done, I see a lot of co-axial wheels and pallet forks returned, meaning they have been replaced for wear. This doesn't happen with nearly the same frequency with a Swiss lever escapement.
Now is that a problem? I guess it really depends on how you think about watches and how they are serviced. It's normal practice to replace certain parts at every service, like the mainspring. I also know that on certain movements, I'm very likely to have to replace a specific part, because it seems to be worn on just about every movement I get in. I don't personally believe that makes it a bad movement or design - all movements have weak spots and are a series of design compromises. So is replacing these co-axial parts at every service any different, or a cause for concern? I'm not going to tell you one way or another - it's something you would have to decide for yourself if it bothers you or not.»